The name Angelia has its origins in Ancient Greek, deriving from the word "angelos", which means "messenger" or "angel". It was a popular name among early Christians, who associated it with heavenly beings and divine messengers.

One of the earliest known references to the name Angelia can be found in the writings of the 4th-century theologian, Saint Augustine of Hippo. He mentions a woman named Angelia in his work, "The City of God", where she is described as a devout Christian who lived a virtuous life.

Throughout the Byzantine Empire, the name Angelia gained popularity, particularly among the aristocratic classes. One notable figure bearing this name was Angelia Comnena, a 12th-century Byzantine princess and historian. She authored the "Alexiad", a celebrated historical account of her father's reign as Emperor Alexios I Komnenos.

During the Renaissance period, the name Angelia became more widespread across Europe. In Italy, it was often used as a variation of the name Angela, which was derived from the same Greek root. One prominent Italian figure with this name was Angelia Merici, the founder of the Ursuline Order of nuns, who lived from 1474 to 1540.

In England, the name Angelia was occasionally used, though it was less common than variations such as Angela or Angelica. One notable English bearer of the name was Angelia Burdett-Coutts, a 19th-century philanthropist and the first woman to receive a peerage in her own right, who lived from 1814 to 1906.

The name Angelia also found its way to the Americas, where it was embraced by various communities. One notable American with this name was Angelia Ferguson, a 19th-century educator and activist who fought for the rights of African American women and children, born in 1839.

While the name Angelia has fallen out of widespread use in recent times, it remains a beautiful and meaningful name with a rich history and connections to both ancient and modern figures who have left their mark on the world.